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species1 species2 species3 species4 site1 1 3 5 0 site2 2 0 3 3 site3 3 4 7 6 site4 4 5 3 7 this is what I want to do. It is hard to learn R as I have never programed anything in my life, but I am learning slowly. I am a researcher who finds statistics indispensable. I apologize for my flawed logic but this is what I want to do. x <- read.table("file.csv", sep=",", header=T) it is is correct I just want to flip the rows and columns. How do I do this? sorry for my lack of understanding. All help is greatly appreciated. Stephen On Tue, Apr 15, 2008 at 7:08 PM, Rolf Turner <[EMAIL PROTECTED]> wrote: > > RML: *** Data frames are NOT matrices!!! *** > > On 16/04/2008, at 10:35 AM, stephen sefick wrote: > > x <- read.table("LittleGarvin.csv", sep=",", header=TRUE) > > y <- t(x) > > str(y) > > > > chr [1:193, 1:288] "oligocha" "0" " 0" " 0" " 0" "0" ... > > - attr(*, "dimnames")=List of 2 > > ..$ : chr [1:193] "X" "upwd1201" "upwd0502" "upwd0702" ... > > ..$ : NULL > > > > x is a data frame with a whole bunch of numeric vectors I would like for > > the > > rows and columns to be reversed == transposed but with the same > > attributes. > > I am trying to feed the transposed data frame to metaMDS(vegan). I am > > stumped- sorry for the large attached file- I am at a loss. > > > > Although it is possible, transposition makes little to no sense > for data frames. If you want to transpose something you are > thinking of it as being a *matrix* not a data frame. The result > of transposing a data frame is in fact a matrix. > > There is as far as I know no structure in R whereby the rows of > a matrix-like object can have different characteristics. (The > term ``attributes'' has a technical meaning in R which is probably > not what you intend --- but even if you do intend that, it's not > possible.) > > The complaint made in your subject line is that the result of > your transposition is not numeric. It is in fact character. > That's because there is character data in the data frame x. > When you transpose x, it is first coerced into a matrix. If there > are any character or factor columns in x the coercion will result > in a character matrix, the transpose of which will of course be a > character matrix. > > The solution is of course to remove the character or factor columns > from x before transposition. > > If you ``can't'' do this, then you ***can't*** transpose --- > transposition > just doesn't make any sense at all. Simple as that. > > cheers, > > Rolf Turner > > > > ###################################################################### > Attention:This e-mail message is privileged and confidential. If you are > not theintended recipient please delete the message and notify the > sender.Any views or opinions presented are solely those of the author. > > This e-mail has been scanned and cleared by MailMarshal > www.marshalsoftware.com > ###################################################################### > -- Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods. We are mammals, and have not exhausted the annoying little problems of being mammals. -K. Mullis [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.